Definition: rare and very valuable Level: B2
黄金是一种珍贵的金属。
Gold is a ___precious metal.
请小心别碰那个珍贵的花瓶。
Please be careful not to touch that ___precious vase.
对我们所有人来说，时间是最宝贵的资源。
Time is the most ___precious resource for all of us.
